No. It is not necessary for you to supply the cooker which you would need re-conditioning. We can re-condition your own cooker but unless you can get the whole cooker sent to us, it is cheaper to have one of the same models we have in stock re-conditioned and we take yours in part exchange. The advantages of doing it this way is that you can still use the cooker you have until the new one arrives, we can exchange them on the day.